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In the octaploid wheat, the haploid (n) and basic numbers (x) of chromosomes are :-

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Important Questions on Principles of Inheritance and Variation

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 269
Non-ionizing radiations commonly used for inducing mutations in organisms are :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 270
The smallest unit of genetic material which upon mutation produce a phenotypic effect is :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 271

Ultimate source of genetic variation is

(OR)

the process which provides raw material for evolution is:-

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 272
Haploids are preferred over diploids for mutation studies because :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 273
Type of gene mutation which involves replacement of purine with pyrimidine or vice versa (OR) The substitution of one type of base with another type of base is :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 274
The minimum requirement for mutation is :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 275
Mutations are :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 276
Sickle cell anaemia is an example of :